Progressive kinetic energy penetration device utilizing energy-gathered jet flow to open holes

Abstract

The invention relates to a progressive kinetic energy penetration device utilizing energy-gathered jet flow to open holes, belongs to the technical field of ammunition, and solves the problems that in the prior art, shock waves formed by front-stage detonation are overpressure, detonation products and fragments hinder a rear-stage follow-up hitting body, and the impact force is too high. And a rear-stage follow-up striking body cannot smoothly invade into a pre-damage hole formed by explosion of a front-stage striking body in a follow-up manner. The device comprises a first striking body, a second striking body, a connecting cylinder, a dredging block and a connecting rod, the first striking body comprises a shaped charge liner and an initiating explosive, the initiating explosive can make the shaped charge liner become metal jet flow, and a pre-damage hole is formed in a target; and the second striking body drills into the target along the pre-damaged hole to strike the target. Axial detonation waves and fragments generated by explosion of the initiating explosive can be dispersed in the radial direction of the conical surface of the dredging block of the penetration device, the detonation waves and the fragments can be discharged through the flow guide window, the influence of the detonation waves and the fragments on the second striking body is reduced, and the direction of the second striking body is prevented from being changed.

Description

Technical Field

[0001] The invention belongs to the technical field of ammunition, and in particular relates to a progressive kinetic energy penetrating device utilizing a shaped energy jet to open a hole. Background Art

[0002] With the development of modern defense systems, the high-value strategic military projects of the world's major military countries, such as large command and control centers, summit headquarters, communication facilities, ammunition storage depots, missile silos, etc., have been transferred to deep underground or natural mountains in large numbers, relying on high-strength rock formations, C100 or higher high-strength concrete and other ultra-hard and solid protective structures to improve damage resistance. The development of modern offensive and defensive confrontation systems will further promote the development of high-value strategic target protection in a more solid direction. Ultra-hard high-value targets are the main combat targets on the battlefield at this stage and in the future.

[0003] For the penetration of high-strength and ultra-hard targets, the strike body adopts a composite structure of breaking and penetrating, which is composed of a front-stage energy-gathering strike body and a rear-stage penetrating blasting strike body. The design of the front-stage strike body takes into account the penetration depth of the energy-gathering penetrator and the aperture of the hole of the energy-gathering penetrator at the same time, providing a good ballistic environment for the reliable follow-up of the rear-stage strike body; according to the aperture of the hole of the front-stage strike body and the characteristics of the projectile, the design of the rear-stage strike body must take into account the characteristics of the follow-up strike body and the single-stage kinetic energy penetrating strike body, ensuring that the rear-stage strike body can quickly adjust its posture and reliably follow the channel opened by the front stage, and also ensuring that when the rear-stage follow-up strike body penetrates the target, the penetration resistance is minimized and a certain ballistic stability is guaranteed.

[0004] For the integrated penetration and breaking striking device, the backward energy gathering effect of the large amount of high-energy charge loaded in the front stage after the explosion is significant. The shock wave overpressure, detonation products and fragments formed by the front stage explosion may damage or detonate the rear stage following striking body on the one hand; on the other hand, it may cause the speed of the rear stage following striking body to decrease or the posture to change, so that it cannot smoothly follow and invade the pre-damaged hole of the target formed by the explosion of the front stage striking body.

[0005] Therefore, there is an urgent need for a progressive kinetic penetration device that utilizes a focused energy jet to open a hole, so as to solve the problem in the prior art that the shock wave overpressure, detonation products and fragments formed by the preceding explosion hinder the succeeding striking body, and the succeeding striking body cannot smoothly follow and invade the pre-damaged hole formed by the explosion of the preceding striking body. Summary of the invention

[0006] In view of the above analysis, the present invention aims to provide a progressive kinetic penetration device using a focused jet to open a hole, so as to solve the problem in the prior art that the shock wave overpressure, detonation products and fragments formed by the preceding explosion hinder the succeeding striking body, and the succeeding striking body cannot smoothly follow and invade the pre-damaged hole formed by the explosion of the preceding striking body.

[0007] The purpose of the present invention is mainly achieved through the following technical solutions:

[0008] A progressive kinetic energy penetration device using a shaped energy jet to open a hole comprises a first striking body, a second striking body, a connecting tube, a guide block and a connecting rod, wherein the first striking body comprises a charge liner and an explosive, wherein the explosive can explode to make the charge liner become a metal jet and form a pre-damaged hole on the target; the second striking body uses the pre-damaged hole to drill into the target and strike the target;

[0009] One end of the connecting tube is connected to the outer wall of the first striking body, and the other end of the connecting tube is connected to the outer wall of the second striking body; the drainage block is arranged in the connecting tube;

[0010] The guide block is a cone, the surface of the cone is a concave cone facing the central axis, one end of the connecting rod is fixedly connected to the first striking body, and the other end of the connecting rod is connected to the cone tip, and the axial detonation wave and fragments generated by the explosion of the detonator can be dispersed in the radial direction of the concave cone of the guide block;

[0011] The connecting cylinder is composed of a plurality of sub-cylinder bodies, and the plurality of sub-cylinder bodies can be separated;

[0012] The connecting tube is provided with a guide window, through which the detonation wave and fragments can be discharged from the connecting tube.

[0013] Furthermore, it also includes a buffer block, one end of which is connected to the guide block, and the other end of which is connected to the second striking body.

[0014] Furthermore, the buffer block is made of porous material, can shrink axially and absorb the kinetic energy of the drainage block.

[0015] Furthermore, the sub-cylinder body comprises a large arc segment, a middle segment and a small arc segment, and the large arc segment is connected to the small arc segment through the middle segment.

[0016] Furthermore, the first striking body includes a first striking body and an annular groove, wherein the annular groove is arranged on the outer wall of the first striking body; a flange is arranged on the inner wall of the large arc segment, and the flange can be connected to the annular groove.

[0017] Furthermore, the second striking body includes a second striking body and a locking protrusion, and the locking protrusion is arranged on the outer wall of the second striking body; a locking hole is provided on the small arc segment, and the locking hole can be connected with the locking protrusion, thereby connecting the sub-cylinder body with the second striking body.

[0018] Furthermore, it also includes a locking clamp spring, which includes a base plate and a plug-in rod. The base plate includes a hollow portion, and the plug-in rod is arranged on the side wall of the hollow portion; the locking protrusion is provided with a plug-in rod hole, and the plug-in rod can be connected to the plug-in rod hole.

[0019] Furthermore, the drainage block comprises a drainage body and a push rod hole, and the push rod hole is arranged on the drainage body.

[0020] Furthermore, the locking clamp also includes a push rod, which is arranged on the base plate and can be connected to the push rod hole. The guide block can push the push rod to separate the plug rod from the locking protrusion.

[0021] Furthermore, the connecting tube further comprises a slide groove, the slide groove is arranged on the small arc segment, and the push rod can slide on the slide groove.

[0022] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0023] (1) Compared with the prior art in which the shock wave overpressure, detonation products and fragments generated by the front-stage detonation hinder the subsequent-stage following striking body, the axial detonation wave and fragments generated by the explosion of the detonator can be dispersed along the radial direction of the conical surface of the guide block, preventing the detonation wave and fragments from affecting the second striking body; the detonation wave and fragments can be discharged from the connecting tube through the guide window, reducing the adverse effects of the detonation wave and fragments on the second striking body, and preventing the second striking body from changing its movement direction;

[0024] (2) The connecting tube of the penetration device of the present invention is a decomposable connecting tube; after the first striking body explodes, when the guiding block moves toward the second striking body, the guiding block can push the push rod, thereby separating the plug rod from the locking protrusion, and the multiple sub-cylinders are radially separated from the second striking body under the impact of the explosion wave, so that there is no obstacle on the guiding path of the explosion wave and fragments, thereby improving the guiding efficiency of the explosion wave and fragments;

[0025] (3) The inner wall of the large arc segment of the present invention is provided with a flange, which can be connected to the annular groove, thereby connecting the sub-cylinder body to the first striking body and facilitating the radial separation of the sub-cylinder body from the first striking body; the small arc segment is provided with a locking hole, which can be connected to the locking protrusion, thereby connecting the sub-cylinder body to the second striking body and facilitating the radial separation of the sub-cylinder body from the second striking body;

[0026] (4) The plug-in rod of the locking clip of the present invention can be connected to the plug-in rod hole to prevent the penetration device from disintegrating.

[0027] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can become obvious from the description or be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0029] Figure 1 It is a schematic diagram of the overall structure of the penetration device of the present invention;

[0030] Figure 2 It is a schematic diagram of the exploded structure of the penetration device;

[0031] Figure 3 Schematic diagram of the exploded structure of the connection mechanism.

[0032] Reference numerals:

[0033] 1-first striking body; 2-second striking body; 3-connecting tube; 4-drainage block; 5-connecting rod; 6-buffer block; 7-locking spring; 11-first striking body; 12-annular groove; 21-second striking body; 22-locking protrusion; 31-large cylinder section; 32-middle cylinder section; 33-small cylinder section; 34-guide window; 35-large arc section; 36-small arc section; 37-locking hole; 38-slide groove; 41-drainage body; 42-top rod hole; 71-base plate; 72-plug rod; 73-top rod. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0035] Example 1

[0036] A specific embodiment of the present invention, as Figure 1 As shown, a progressive kinetic energy penetration device (hereinafter referred to as the penetration device) that uses a focused energy jet to open a hole is disclosed, including a first striking body 1, a second striking body 2 and a connecting mechanism. The first striking body 1 is connected to the second striking body 2 through the connecting mechanism. The first striking body 1 includes a charge liner and an explosive. When the explosive explodes, the charge liner can become a metal jet to form a pre-damaged hole on the target; the second striking body 2 uses the pre-damaged hole channel to drill into the target and strike the target.

[0037] Preferably, both the first striking body 1 and the second striking body 2 are cylindrical. After the first striking body 1 is detonated, the detonation wave and fragments generated by the explosion of the explosive, if the detonation wave and fragments generated in the connecting mechanism cannot be guided and discharged, will have an adverse effect on the second striking body 2, and even prevent the second striking body 2 from drilling into the pre-damaged hole.

[0038] Preferably, if Figure 2 As shown, in order to reduce the adverse effects of the explosion of the explosive on the second striking body 2, the connecting mechanism includes a connecting tube 3, a guide block 4 and a connecting rod 5. One end of the connecting tube 3 is connected to the outer wall of the first striking body 1, and one end of the connecting tube 3 is connected to the outer wall of the second striking body 2. The connecting tube 3 is used to connect the first striking body 1 and the second striking body 2, and keep the first striking body 1 and the second striking body 2 coaxial so that the second striking body 2 is aligned with the pre-damaged hole channel. The guide block 4 is arranged in the connecting tube 3 and is fixedly connected to the first striking body 1 through the connecting rod 5. The guide block 4 is a cone, and the connecting rod 5 is connected to the tip of the cone. The axial detonation wave and fragments generated by the explosion of the explosive can be dispersed along the cone surface of the guide block 4 to prevent the detonation wave and fragments from affecting the second striking body 2. When the penetration device of this embodiment is fired, the connecting rod 5 is used to prevent the guide block 4 from detaching from the first striking body 1 and preventing the guide block 4 from hitting the second striking body 2.

[0039] Preferably, the diameter of the first striking body 1 is greater than the diameter of the second striking body 2. The connecting tube 3 is a conical tube, including a large tube section 31, an intermediate tube section 32 and a small tube section 33. The large tube section is connected to the outer wall of the first striking body 1, and the small tube section is connected to the outer wall of the second striking body 2. The outer diameter of the guide block 4 is equal to the inner diameter of the small tube section 33. In order to guide the blast wave and fragments out of the connecting mechanism, a guide window 34 is provided on the intermediate tube section 31. The blast wave and fragments can be discharged from the connecting tube 3 through the guide window 34, reducing the adverse effects of the blast wave and fragments on the second striking body 2 and preventing the second striking body 2 from changing the direction of movement.

[0040] Preferably, the conical surface of the guide block 4 is a concave conical surface toward the central axis, which can change the flight direction of the detonation wave and fragments generated by the explosion of the explosive, so that the detonation wave and fragments are dispersed along the radial direction of the concave conical surface and are guided to the guide window 34.

[0041] Preferably, after the first striking body 1 explodes, the guide block 4 will move toward the second striking body 2. In order to disable and slow down the guide block 4 and prevent the guide block 4 from obstructing the second striking body 2, the penetration device of this embodiment also includes a buffer block 6. One end of the buffer block 6 is connected to the guide block 4, and the other end of the buffer block 6 is connected to the second striking body 2. The buffer block 6 can be compressed to absorb the kinetic energy of the guide block 4, and the speed of the guide block 4 is changed to the same as that of the second striking body 2, and the target is struck together with the second striking body 2.

[0042] Preferably, the buffer block 6 is made of a porous material. In some optional embodiments, the buffer block 6 is a buffer block of a negative Poisson's ratio material, which can shrink axially to absorb the kinetic energy of the drainage block 4.

[0043] Compared with the prior art in which the shock wave overpressure, detonation products and fragments formed by the preceding explosion hinder the succeeding striking body, the axial detonation wave and fragments generated by the explosion of the detonator can be dispersed along the radial direction of the conical surface of the guide block 4, preventing the detonation wave and fragments from affecting the second striking body 2; the detonation wave and fragments can be discharged from the connecting tube 3 through the guide window 34, reducing the adverse effects of the detonation wave and fragments on the second striking body 2, and preventing the second striking body 2 from changing its direction of movement.

[0044] Example 2

[0045] In Embodiment 1, the detonation wave and fragments are discharged from the connecting tube 3 through the guide window 34, but the connecting tube 3 is still an obstacle in the discharge path of the detonation wave and fragments. Figure 3 As shown, based on Example 1, the penetration device of this embodiment improves the connection mechanism, and changes the connection tube 3 into a decomposable connection tube, so that there is no obstacle on the evacuation path of the detonation wave and fragments, thereby improving the evacuation efficiency of the detonation wave and fragments.

[0046] Preferably, the connecting cylinder 3 is composed of a plurality of sub-cylinder bodies, each of which includes a large arc segment 35 , a middle segment and a small arc segment 36 , and the large arc segment 35 is connected to the small arc segment 36 via the middle segment.

[0047] Preferably, in order to connect the sub-cylinder body with the first striking body 1, the first striking body 1 includes a first striking body 11 and an annular groove 12, and the annular groove 12 is arranged on the outer wall of the first striking body 11. A flange is arranged on the inner wall of the large arc segment 35, and the flange can be connected with the annular groove 12, so as to connect the sub-cylinder body with the first striking body 1 and facilitate the radial separation of the sub-cylinder body and the first striking body 11.

[0048] Preferably, in order to connect the sub-cylinder body with the second striking body 2, the second striking body 2 includes a second striking body 21 and a locking protrusion 22, and the locking protrusion 22 is arranged on the outer wall of the second striking body 21. The small arc segment 36 is provided with a locking hole 37, and the locking hole 37 can be connected with the locking protrusion 22, so as to connect the sub-cylinder body with the second striking body 2, and facilitate the radial separation of the sub-cylinder body and the second striking body 2.

[0049] Preferably, in order to prevent the sub-cylinder body from being separated from the second striking body 2 , the penetration device of this embodiment further includes a locking spring 7 , which can be connected to the locking protrusion 22 , thereby preventing the sub-cylinder body from being separated from the second striking body 2 .

[0050] Preferably, the locking clip 7 includes a base plate 71 and a plug rod 72, the base plate 71 includes a hollow portion, and the plug rod 72 is arranged on the side wall of the hollow portion. The locking protrusion 22 is provided with a plug rod hole, and the plug rod 72 can be connected to the plug rod hole. After the sub-cylinder body is connected to the second striking body 2, the plug rod 72 can prevent the small arc segment 36 from being separated from the locking protrusion 22, thereby preventing the sub-cylinder body from being separated from the second striking body 2, and preventing the penetration device of this embodiment from disintegrating.

[0051] Preferably, in order to separate the plug-in rod 72 from the locking protrusion 22, the locking clamp 7 also includes a push rod 73, which is arranged on the base plate 71. The push rod 73 can be connected to the guide block 4. After the first striking body 1 explodes, when the guide block 4 moves toward the second striking body 2, the guide block 4 can push the push rod 73, thereby separating the plug-in rod 72 from the locking protrusion 22.

[0052] Preferably, after the plug-in rod 72 is connected to the plug-in rod hole, the base plate 71 is connected to the outer wall of the small arc segment 36. In order to enable the top rod 73 to be connected to the drainage block 4, the connecting tube 3 also includes a slide groove 38. The slide groove 38 is arranged on the small arc segment 36. The top rod 73 can slide on the slide groove 38 and be connected to the drainage block 4.

[0053] Preferably, the drainage block 4 includes a drainage body 41 and a push rod hole 42, the push rod hole 42 is arranged on the drainage body 41, and the push rod hole 42 is used to connect with the push rod 73, so that the drainage block 4 can push the locking spring 7 to separate the plug rod 72 from the locking protrusion 22.

[0054] When assembling the penetration device of this embodiment, the user can connect multiple sub-cylinders with the first striking body 1 and the second striking body 2 one by one, first connect the flange with the annular groove 12, thereby connecting the sub-cylinder with the first striking body 1, then connect the locking hole 37 with the locking protrusion 22, thereby connecting the sub-cylinder with the second striking body 2, and then insert the plug rod 72 into the plug rod hole, continue to push the locking clip 7 toward the first striking body 1, the push rod 73 can be connected with the slide groove 38, and slide on the slide groove 38, and finally the push rod 73 can be connected with the push rod hole 42, and the assembly of the penetration device of this embodiment is completed. When in use, the first striking body 1 explodes, the detonation wave pushes the dredging block 4 to move toward the second striking body 2, and the push rod hole 42 pushes the push rod 73, thereby separating the plug rod 72 from the locking protrusion 22, and multiple sub-cylinders are radially separated from the second striking body 2 under the impact of the detonation wave, and there is no obstacle on the path of the detonation wave and the fragments, which improves the dredging efficiency of the detonation wave and the fragments.

[0055] Compared with the embodiment 1, which only uses the guide window 34 to discharge the blast wave and fragments from the connecting tube 3, the connecting tube 3 of this embodiment is changed to a decomposable connecting tube; after the first striking body 1 explodes, when the guide block 4 moves toward the second striking body 2, the guide block 4 can push the push rod 73, thereby separating the plug rod 72 from the locking protrusion 22, and the multiple sub-cylinders are radially separated from the second striking body 2 under the impact of the blast wave, so that there is no obstacle on the guide path of the blast wave and fragments, thereby improving the blast wave and fragments. The drainage efficiency is improved; a flange is provided on the inner wall of the large arc segment 35, and the flange can be connected to the annular groove 12, so as to connect the sub-cylinder body with the first striking body 1, and facilitate the radial separation of the sub-cylinder body from the first striking body 11; a locking hole 37 is provided on the small arc segment 36, and the locking hole 37 can be connected to the locking protrusion 22, so as to connect the sub-cylinder body with the second striking body 2, and facilitate the radial separation of the sub-cylinder body from the second striking body 2; the plug-in rod 72 of the locking retaining ring 7 can be connected to the plug-in rod hole to prevent the penetration device from disintegrating.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A progressive kinetic energy penetration device using a concentrated jet to open a hole, characterized in that: The invention comprises a first striking body (1), a second striking body (2), a connecting tube (3), a guide block (4) and a connecting rod (5); the first striking body (1) comprises a charge liner and a detonating charge; the detonating charge can explode to make the charge liner become a metal jet, thereby forming a pre-damaged hole on the target; the second striking body (2) uses the pre-damaged hole to drill into the interior of the target and strike the target.

2. The progressive kinetic energy penetration device using concentrated energy jet opening according to claim 1 is characterized in that: It also comprises a buffer block (6), one end of which is connected to the guide block (4), and the other end of which is connected to the second striking body (2).

3. The progressive kinetic energy penetration device using concentrated energy jet opening according to claim 2 is characterized in that: The buffer block (6) is made of porous material, can shrink axially and absorb the kinetic energy of the drainage block (4).

4. The progressive kinetic energy penetration device using concentrated energy jet opening according to claim 1 is characterized in that: The connecting tube (3) is provided with a guide window (34), through which the detonation wave and fragments can be discharged from the connecting tube (3); the sub-cylinder body comprises a large arc segment (35), a middle segment and a small arc segment (36), and the large arc segment (35) is connected to the small arc segment (36) via the middle segment.

5. The progressive kinetic energy penetration device using concentrated energy jet opening according to claim 4 is characterized in that: The first striking body (1) comprises a first striking body (11) and an annular groove (12), wherein the annular groove (12) is arranged on the outer wall of the first striking body (11); a flange is arranged on the inner wall of the large arc segment (35), and the flange can be connected to the annular groove (12).

6. The progressive kinetic energy penetration device using concentrated energy jet opening according to claim 4 is characterized in that: The second striking body (2) comprises a second striking body (21) and a locking protrusion (22), wherein the locking protrusion (22) is arranged on the outer wall of the second striking body (21); a locking hole (37) is provided on the small arc segment (36), and the locking hole (37) can be connected to the locking protrusion (22), thereby connecting the sub-cylinder body to the second striking body (2).

7. The progressive kinetic energy penetration device using concentrated energy jet opening according to claim 6 is characterized in that: The invention also comprises a locking clamp spring (7), wherein the locking clamp spring (7) comprises a base plate (71) and an insertion rod (72), wherein the base plate (71) comprises a hollow portion, and the insertion rod (72) is arranged on a side wall of the hollow portion; and the locking protrusion (22) is provided with an insertion rod hole, and the insertion rod (72) can be connected to the insertion rod hole.

8. The progressive kinetic energy penetration device using concentrated energy jet opening according to claim 7 is characterized in that: The drainage block (4) comprises a drainage body (41) and a push rod hole (42), and the push rod hole (42) is arranged on the drainage body (41).

9. The progressive kinetic energy penetration device using concentrated energy jet opening according to claim 8 is characterized in that: The locking clamp (7) further comprises a push rod (73), wherein the push rod (73) is arranged on the base plate (71), and the push rod (73) can be connected to the push rod hole (42), and the guide block (4) can push the push rod (73) to separate the plug rod (72) from the locking protrusion (22).

10. The progressive kinetic energy penetration device using concentrated energy jet opening according to claim 9, characterized in that: The connecting tube (3) further comprises a slide groove (38), wherein the slide groove (38) is arranged on the small arc segment (36), and the push rod (73) can slide on the slide groove (38).

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